"Someone once said Dan has the attention span of a gnat, " says Edward Eskandarian, chief executive of Arnold Communications, the Boston agency known for its clever Volkswagen ads, acquired by Snyder in March 1998.
Once derided by critics as an example of society's increasingly gnat-like attention span, the site's 140-character limit has in many cases inspired users to be as witty, insightful or informative as they can be in as few words as possible.